/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package edu.capex.javaee;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Acer
 */
public class multipleParameterValues extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Multiple Parameter Values</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<br>");
            out.println("<br>Select your favorite music:");
            out.println("<br><form method='POST'>");
            out.println("<br><input type='checkbox' name=fm value='Jazz'>Jazz");
            out.println("<br><input type='checkbox' name=fm value='Classical'>Classical");
            out.println("<br><input type='checkbox' name=fm value='Country'>Country");
            out.println("<br><input type='checkbox' name=fm value='Rock'>Rock");
            out.println("<br><input type='submit' value='Submit'>");
            out.println("<br></form>");
            out.println("</body>");
            out.println("</html>");

            String[] parameterValues = request.getParameterValues("fm");
            if(parameterValues != null){
                int length = parameterValues.length;
                out.println("You have selected: ");
                for (int i= 0; i < length; i++) {
                    out.println("<br>"+parameterValues[i]);
                }
            }

        } finally { 
            out.close();
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
